Perforating machine



Feb. 6, 1940. RUPPERT 2,189,742

PERFORATING MACHINE Filed March 11, 1939 I 2 Sheets-Sheet 1 INVENTOR.fiflry [Zap 6677 7 W ATTORNEYS PERFORATING MACHINE A Henry Ruppert,Woodsidc, 4 N. Y., assignor, to Leedall Products, Inc., New York, N. Y.,a core poration of New York Application March 11, 1939, Serial 11Claims.

of material, whether a fabric, paper or leathers- One of the objects ofthe invention-is to provide a perforating machine of this general typewhich is completely mobile, so as tomake it possible to move the entiremachine over an expansive surface or area in any direction so as toapply the perforations in any design, includ-..

6 ing those involving a curved alignment and abrupt changes in thedirection of the line of perforations. Anyfof many complicated formsandtherefore decorative designs are thus possible of application with mymobile type of perforating 55 machine, "which does not, as do certainstructures of the prior art, embody a rigid frame associatedfiwith astationary Work support and which are"characterized by the disadvantagethat only'str aightdines of perforations are capable of 3fapplicatiorito' the material treated.

A further object of. the invention is to provide a perforating-machineembodying ahammer operative upon the punch, which in turn is mechanically lifted by the hammer, as distinguished from prior artstructures in which the punching V A still .further object of theinvention is t provide a perforating machine embodying anadf' 6justable. mechanism for regulating the pressure l of the hammer, so thatthe perforating machine may be appliedto produce perforations indiffertype of control keeping the punchoperating hammer in uprightposition. r

A still further object of the invention is to 56 provide upon theperforating machine a recessed base plate'of such form and contourationas'ito make possible in conjunction with the mobility of the apparatusas a whole the-application of a variety of designs ofdifferent form tothe ma- ::teria1operated. upon.-

A specific embodiment of my novel perforating machine is illustrated inthe accompanying drawings, in which Fig. 1 is a vertical partially Isectional View through the machine, along the lines |l of Fig.2; Fig.2is a plan view of the machine; Fig; 3 is a vertical section along theline-3 3 of Fig. 2; and Fig. 4 is a section along the line 4 '4 of Fig.2.

6.;;.U'NITEIDQSTATES PATENT, OFFICE f -"Referring more particularly tothe drawings, I

in; which similar reference characters identify similar'partsin theseveral views, mynovel perforating machine comprises a gripping handleof aficonflg'uration facilitating its grasping byone handofthe-operator. The handle 5 is supportedupon afbase 6 of substantiallyoval form having a recess the forward portion thereof.

Supported upon the upper'edge of the handle 5 is a plate'8 through anaperture of which near the handle 5 is mounted a switch '9,the operatinghandle) of which" is thus positioned so as to be within easy reach ofthe thumbof the operato'r while the 'machine is being grasped by thehand, withthe palm encompassing the handle 5 andthe fingers in operativecontact straddling the trigger I I. 'The trigger ll'is'pivoted upon ascrew 12 passing through an upstanding projection l3-of. a verticallydisposed block l4, which acts one of the bearin'gsfor a shaft I5 uponwhichjthefulcmnnmember lfi of the hammer is mounted, The opposite end ofthe shaft I5 is supported, within a block extending from the Plate -.1.1 1. v Supported upon the plate 8 is an electric motor 'l8,-to"the endof the shaft to whichis secured a pinion l9 meshing with a gearsupported upon a shaft-2| within bearings 22, 23, extending upwardlyfrom the'plate 8. Qperatively securedfl tothe gear-'20, and upon theshaft 2| is acam 24,;the highdwcll of which, up'onyrotation of the camis adapted to press downwardly upon the rearwardlyfextending portion ofthe hammer to cause the hammer to be rotated about its ful crum l6,"thebody of the hammer 2'1, extending forwardly of its furcurm thus beingraised, carrying withit the integral hammer head 28.

Secured to the hammer body 21 is a stop plate 29 having a heel portion30 which, upon rotation ofthe hammer about its fulcrum, engages arece'ss3| in the trigger, thereby acting as a stop, so that when the trigger Hisreleased by"th'e fingers 'of the operator, the hammer 21 ceasesoperating. 2in thismannen jfull control of the punching machine,even-when the switch 9 is on and current supplied to the motor, ishad-byof the cam 24 to depress the heel portion of the cause theperforating in the material only during such times that the trigger isunder pressure, and ceasing to operate immediately after pressure onsuch trigger is released, depending upon the exact position of thehammer arm 30.

When the hammer has been raised by the mechanism and in the mannerhereinabove described, it is caused to descend by means of its ownweight and a-spring 32 anchored at one end to the projection 33extending downwardly from the fulcrum of the hammer and at its other endto a pin 34 extending from a block 35 mounted for linear movement upon athreaded shaft 36 which may be rotated, for adjustment of the tension ofthe spring 32, by a knob 31,

The electrical circuit to the motor includes a speed regulator generallydesignated at 38, which includes an ordinary rheostat 39 and aregulating knob 40.

Pivoted at the forward end of the block I4 is a lever 4| having abifurcated end 42 straddling the shaft 43 of the punch between disc 44and disc 45 at the upper end thereof. The element 4| at its rear end isengaged by the rear end of element 29. Surrounding the shaft 43 is thehollow punch 46 having the perforating nose 41. The punchings may bedisposed of in any convenient manner, for instance, upon removal ofpunching 4S periodically from the hollow interior thereof. The punch issecured within a housing 48 preferably threaded into the plate 8 nearthe forward end thereof, with the punch extending downwardly immediatelyin advance of the opening of the recess 1 in the base plate 6 of theapparatus.

Extending and supported from the plate 8 there may be provided a lamphousing 49 in which may be secured an incandescent lamp 50 forilluminating the surface of the material being perforated. "Theelectrical connections, including the circuit from the switch to themotor, the speed regulator and the lamp are not shown as they may beconventional.

The operation of my novel perforating machine is as follows: i

The machine is grasped by the operator by the gripping handle 5, withthe fingers of the same hand extending over the front portion of thetrigger H and the thumb in substantial proximity to the switch leverIll. The motor is then started by throwing the switch 9 by means of itscontrolling lever l0 and when the operation of perforating is to bebegun, the trigger is pressed inwardly with the i'lngers. ,Thisoperation will release the stop and cause the rotation hammer, therebyraising the head of such hammer. The spring 32 and the weight of thehammer head will then cause the lowering of said head, lowering thepunch 4'! into the material. The next rotation of the cam 24 will thenagain cause the raising of the hammer at the same time pivoting thelever 4| to raise the punch and lift it out of the material to permitthe proper spacing of the apertures. This operation of the mechanismcontinues, the operator moving the entire machine over the surface ofthe material to be perforated, following any particular design to beimparted to such material by the line of perforations to be made.

When the line of perforations is to be inter.- rupted, for instance forthe purpose of moving the machine to a different portion of the surfaceof the material, to again impart a new line of perforations thereto, thetrigger ll may be engaged with 30 by releasing the pressure of thefingers thereon, the hammer being then automatically interrupted in itsoperation by the stop mechanism. Upon again exerting pressure upon thetrigger, the hammer may again be brought into operation.

The speed regulator 38 may be adjusted in well known fashion to cause avariance in the speed with which the hammer is raised and released.Depending upon the nature and thickness of the material operated upon,the operation of the hammer may be controlled by the tension imparted tothe spring 32 by turning of the knob 31 to cause the block 35, to thepin 34 of which the spring is anchored, to move along the threaded shaft36.

While I have described and illustrated a specific embodiment of myinvention, it is obvious that various changes therein, particularly inthe arrangement and configuration of the several parts thereof, may bemade without departing from my invention.

I claim:

1. A perforating machine of the type described comprising a mobile baseplate slidable manually over the material to be perforated, a grippinghandle extending upwardly therefrom, a plate supported on said handle, afulcrumed hammer mounted upon said plate, means for raising the forwardend of said hammer by depressing the end thereof extending rearwardly ofits fulcrum, a spring for lowering the forward portion of said hammer,and a perforating tool positioned for reciprocating movement beneath thehammer, said fulcrumed hammer having a separate movement from saidperforating tool.

2. A perforating machine of the type described comprising a mobile baseplate slidable manually over the material to be perforated, a grippinghandle extending upwardly therefrom, a plate supported on said handle, afulcrumed hammer mounted upon said plate, means for raising the forwardend of said hammer by depressing the end thereof extending rearwardly ofits fulcrum, a spring for lowering the forward portion of said hammer,and a perforating tool positioned for reciprocating movement beneath thehammer, said fulcrumed hammer having a separate movement from saidperforating tool and means for interrupting the operation of saidhammer.

3. A perforating machine of the type described comprising a mobile baseplate slidable manually over the material to be perforated, a grippinghandle extending upwardly therefrom, a plate supported on said handle, afulcrumed hammer mounted upon said plate, means for raising the forwardend of said hammer by depressing the end thereof extending rearwardly ofits fulcrum, a spring for lowering the forward portion of said hammer, aperforating tool positioned for reciprocating movement beneath thehammer said fulcrumed hammer having a separate movement from saidperforating tool, and means for adjusting the tension of said spring.

4. A perforating machine of the type described comprising a mobile baseplate slidable manually over the material to be perforated, a grippinghandle extending upwardly therefrom, a plate supported on said handle, afulcrumed hammer mounted upon said plate, means for raising the forwardend of said hammer by depressing the end thereof extending rearwardly ofits fulcrum, a spring for lowering the forward portion of said hammer, aperforating tool positioned for reciprocating movement beneath thehammer, means for adjusting thetensionof said spring, and

means for interrupting the operation of said ally over the material tobe perforated, a gripping handle extending upwardly, therefrom, atrigger extending along said handle, a plate supported on said handle, apivoted hammer mounted upon said plate, means for raising the forwardend of said hammer by depressing the end thereof extending rearwardly ofits fulcrum, an adjustable spring for lowering the forward portion ofsaid hammer, and a perforating tool positioned for reciprocatingmovement beneath the hammer said fulcrumed hammer having a. separatemovement from said perforating tool, and said trigger being effectivefor interrupting the operation of said hammer.

6. A perforating machine of the type described comprising a mobile baseplate slidable manually over the material to be perforated, a grippinghandle extending upwardly therefrom, a trigger extending along saidhandle, a plate supported on said handle, a pivoted hammer mounted uponsaid plate, means for raising the forward; end of said hammer bydepressing the end there-" of extending rearwardly of its fulcrum, anadjustable spring for lowering the forward portion of said hammer, aperforating tool positioned for reciprocating movement beneath thehammer, and means for interrupting the operation of said hammer, saidmeans comprising a stop plate extending rearwardly of the hammer andhaving a portion engaging the trigger whereby when the trigger isreleased, the hammer will be in a position of rest.

'7. A perforating machine of the type described comprising a mobile baseplate slidable manually over the material to be perforated, a grippinghandle'extending from said base plate, a supporting plate disposedhorizontally upon said gripping handle, an electric motor mounted uponsaid plate, a fulcrumed hammer having a head and a rearwardly extendingprojection, a cam rotated by means of said motor to fulcrum the hammer,a spring secured to the hammer to cause a lowering of the head thereof,a trigger mechanism for the fulcrumed hammer, secured to, and so as topartially enter, said gripping handle, and a perforating tool dependingfrom said supporting plate to in front of said base plate, saidfulcrumed hammer having a separate movement from said perforating tool.

8. A perforating machine of the type described comprising a mobile baseplate slidable manually over the material to be perforated, a grippinghandle extending from said base plate, a supporting plate disposedhorizontally upon said gripping handle, an electric motor mounted uponsaid plate, a fulcrumedhammer having a head and a rearwardly extendingprojection, a cam rotated by means of said motor to fulcrum the hammen'aspring secured to the hammer to cause a lowering of the head thereof, atrigger mechanism for the fulcrumed hammer, secured to, and so as topartially enter said gripping handle, a perforating tool depending fromsaid supporting plate to in front of said base plate, and a pivotedlever operated by the motorcontrolled mechanismand having a bifurcuatedend for lifting the tool out of the material for the spacing ofapertures therein.

, end of said pivoted lever.

9. A perforating machine of the type described comprising a mobile baseplate slidable manually overthe material to be perforated-a grippinghandleextending from said base plate, asupporting plate disposedhorizontally upon said gripping handle, an electric motor mounted uponsaid plate, a fulcrumed hammer having a head a rearwardly extendingprojection, a cam rotated by means of said motor to fulcrum the hammer,a spring secured to the hammer to cause a lowering of the head thereof,a stop plate, upon one side of the hammer and having a rearwardlyprojecting nose, a trigger mechanism secured to,

and so as to partially enter said gripping handle and having a recessnear the upper edge thereof within which the projecting nose of saidstop plate is adapted to enter to prevent the hammer from operating, aperforating tool depending from said supporting plate to in front of Isaid base plate, and a pivoted lever having a bifurcated end for liftingthe tool but of the material for the spacing of apertures therein, saidlever being pivoted by the nose projecting rearwardly from the stopplate.

10. A perforating machine of the type described comprising a mobile baseplate slidable manually over the material to be perforated, a grippinghandle extending from said base plate, a supporting plate disposedhorizontally upon said gripping handle, an electric motor mounted uponsaid plate, a fulcrumed hammer having a head and arearwardlyextending-projection, a cam rotated by means of said motor to fulcrumthe hammer, a spring secured to the hammer to cause a lowering of thehead thereof, a trigger mechanism for the hammer secured to, and so asto partially enter, said gripping handle,and a perforating tooldepending from said supporting plate to in front of said base plate,said fulcrumed'hammer having a separate movement from said perforatingtool and means for adjusting the tension of said spring for regulatingthe pressure of the hammer.

1 1. A perforating machine of the type described comprising amobile'base plate slidable manually over the material to' be perforated,a gripping handle extending from said base plate, a supporting platedisposed horizontally upon said gripping handle, an electric motormounted upon said plate, a fulcrumed hammer having a head and arearwardly extending projection, a cam rotated by means ofsaid motor tofulcrum the hammer, a spring secured to the hammer to cause a loweringof the head thereof, a stop plate upon one side of the hammer and havinga rearwardly projecting nose, a trigger mechanism secured to, and so asto partially enter said gripping handle and having a recess near theupper edge thereof within which the projecting nose of said stop plateis adapted to enter to prevent the hammer from operating a perforatingtool depending from said supporting plate to in front of said baseplate, and a pivoted lever having a bifurcated end for lifting the toolout of the material for the spacing of apertures therein, said leverbeing pivoted by the nose projecting rearwardly from the stop plate,said perforating tool having a pair of horizontally disposed'discs nearthe upper extremity thereof, the portion of the tool between said discsbeing straddled by the bifurcated HENRY RUPPERT.

